[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.216936][ T4595] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 16.429833][ C0] random: crng init done Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 41.811798][ T5] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 42.171882][ T5] usb 1-1: config 0 has an invalid interface number: 18 but max is 0 [ 42.180184][ T5] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 42.190760][ T5] usb 1-1: config 0 has no interface number 0 [ 42.196905][ T5] usb 1-1: config 0 interface 18 altsetting 255 endpoint 0x81 has an invalid bInterval 32, changing to 9 [ 42.208192][ T5] usb 1-1: config 0 interface 18 has no altsetting 0 [ 42.214952][ T5] usb 1-1: New USB device found, idVendor=0424, idProduct=c001, bcdDevice=74.7c [ 42.224160][ T5] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 42.233709][ T5] usb 1-1: config 0 descriptor?? [ 42.273942][ T5] usb 1-1: claimed gadget: Vendor=0424 ProdID=c001 Bus=01 Device=02 [ 42.282107][ T5] usb 1-1: device path: /sys/bus/usb/devices/1-1:0.18 [ 42.290442][ T5] most_core: registered new device mdev0 (usb_device 1-1:0.18) [ 42.453960][ T2531] usb 1-1: USB disconnect, device number 2 [ 42.461104][ T2531] kasan: CONFIG_KASAN_INLINE enabled [ 42.466789][ T2531] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.475179][ T2531] general protection fault: 0000 [#1] SMP KASAN PTI [ 42.481764][ T2531] CPU: 0 PID: 2531 Comm: kworker/0:2 Not tainted 5.1.0-rc3+ #7 [ 42.489286][ T2531] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.499340][ T2531] Workqueue: usb_hub_wq hub_event [ 42.504456][ T2531] RIP: 0010:device_del+0x76/0xb90 [ 42.509469][ T2531] Code: f1 f1 f1 f1 c7 40 04 00 07 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 88 00 00 00 31 c0 e8 61 0a d6 fe 48 89 d8 48 c1 e8 03 <80> 3c 28 00 0f 85 82 0a 00 00 48 8b 03 4c 8d 63 60 31 f6 4c 8d 7b [ 42.529184][ T2531] RSP: 0018:ffff8881d19af7c0 EFLAGS: 00010246 [ 42.535320][ T2531] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 42.543327][ T2531] RDX: 0000000000000000 RSI: ffffffff82665dff RDI: 0000000000000000 [ 42.551439][ T2531] RBP: dffffc0000000000 R08: ffff8881d193e000 R09: ffffed1039858b26 [ 42.559610][ T2531] R10: ffffed1039858b25 R11: ffff8881cc2c592f R12: ffff8881cc2a4528 [ 42.567703][ T2531] R13: ffff8881cc2c5860 R14: ffff8881cc2a4430 R15: 0000000000000000 [ 42.575677][ T2531] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 42.584700][ T2531] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.591444][ T2531] CR2: 00000000006cc0a0 CR3: 0000000006c26000 CR4: 00000000001406f0 [ 42.599598][ T2531] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.607555][ T2531] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.615706][ T2531] Call Trace: [ 42.618982][ T2531] ? try_to_del_timer_sync+0xbf/0x110 [ 42.624448][ T2531] ? __device_links_no_driver+0x240/0x240 [ 42.630161][ T2531] ? mark_held_locks+0x9f/0xe0 [ 42.634959][ T2531] ? del_timer_sync+0x121/0x130 [ 42.639892][ T2531] device_unregister+0x11/0x30 [ 42.644646][ T2531] hdm_disconnect+0xdf/0x200 [ 42.649222][ T2531] usb_unbind_interface+0x1c4/0x8b0 [ 42.654532][ T2531] ? usb_autoresume_device+0x60/0x60 [ 42.659854][ T2531] device_release_driver_internal+0x431/0x4f0 [ 42.666079][ T2531] bus_remove_device+0x2ee/0x4c0 [ 42.671003][ T2531] device_del+0x462/0xb90 [ 42.675308][ T2531] ? __device_links_no_driver+0x240/0x240 [ 42.681364][ T2531] ? usb_remove_ep_devs+0x3e/0x80 [ 42.686507][ T2531] ? remove_intf_ep_devs+0x13f/0x1d0 [ 42.692473][ T2531] usb_disable_device+0x211/0x690 [ 42.697477][ T2531] usb_disconnect+0x284/0x840 [ 42.702232][ T2531] hub_event+0x13f8/0x35a0 [ 42.706651][ T2531] ? mark_held_locks+0xe0/0xe0 [ 42.711408][ T2531] ? hub_port_debounce+0x260/0x260 [ 42.716547][ T2531] process_one_work+0x90a/0x1580 [ 42.721564][ T2531] ? wq_pool_ids_show+0x300/0x300 [ 42.726584][ T2531] ? do_raw_spin_lock+0x11a/0x280 [ 42.731597][ T2531] worker_thread+0x96/0xe20 [ 42.736091][ T2531] ? process_one_work+0x1580/0x1580 [ 42.741283][ T2531] kthread+0x30e/0x420 [ 42.745480][ T2531] ? kthread_park+0x1a0/0x1a0 [ 42.750146][ T2531] ret_from_fork+0x3a/0x50 [ 42.754657][ T2531] Modules linked in: [ 42.758705][ T2531] ---[ end trace f7bd3ef06325c00e ]--- [ 42.764201][ T2531] RIP: 0010:device_del+0x76/0xb90 [ 42.769363][ T2531] Code: f1 f1 f1 f1 c7 40 04 00 07 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 88 00 00 00 31 c0 e8 61 0a d6 fe 48 89 d8 48 c1 e8 03 <80> 3c 28 00 0f 85 82 0a 00 00 48 8b 03 4c 8d 63 60 31 f6 4c 8d 7b [ 42.789132][ T2531] RSP: 0018:ffff8881d19af7c0 EFLAGS: 00010246 [ 42.795472][ T2531] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 42.803855][ T2531] RDX: 0000000000000000 RSI: ffffffff82665dff RDI: 0000000000000000 [ 42.811934][ T2531] RBP: dffffc0000000000 R08: ffff8881d193e000 R09: ffffed1039858b26 [ 42.819973][ T2531] R10: ffffed1039858b25 R11: ffff8881cc2c592f R12: ffff8881cc2a4528 [ 42.828004][ T2531] R13: ffff8881cc2c5860 R14: ffff8881cc2a4430 R15: 0000000000000000 [ 42.836351][ T2531] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 42.845340][ T2531] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.852281][ T2531] CR2: 00000000006cc0a0 CR3: 0000000006c26000 CR4: 00000000001406f0 [ 42.860560][ T2531] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.869722][ T2531] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.878473][ T2531] Kernel panic - not syncing: Fatal exception [ 42.885513][ T2531] Kernel Offset: disabled [ 42.889836][ T2531] Rebooting in 86400 seconds..